Court documents show the Lakota East graduate saved up his own money, lied to get a passport and planned to head to Syria in 2015 to join ISIL as a fighter.

In January of 2015, documents show a confidential FBI source "met and slowly began interacting with Abdulkader."

After several well-publicized arrests of people who were planning to travel to join ISIL, documents show Abdulkader reconsidered his plan and opted to plan an attack at home instead.

In Oct. 2014, Abdulkader tweeted about his parents. "Instead of wanting me to be a Shaheed, they want me to be a Chemist... May Allah guide us!," he wrote.

That was one of several tweets where Abdulkader showed his support for ISIL. Documents state he also re-posted pictures of ISIL beheadings.

By May 2015, Abdulkader had a plan to behead a local solider at his home and videotape it "so it can be used as an ISIL propaganda video," documents state.

The 21-year-old shared his thoughts to a prominent overseas ISIL member about the soldier he should murder. Abdulkader reportedly wrote, "make sure the soldier was in Iraq or Afghanistan."

Documents show the member of ISIL gave Abdulkader photos and personal information of a military member.

"He's the one," Abdulkader replied, according to documents. Abdulkader was also given the soldier's address and spouse's name.

Court filings show, after that attack, Abdulkader was to wear the soldier's uniform to a Cincinnati area police station and "throw pipe bombs, engage the police officers with firearms, and then fight to the death."

Investigators have not said which department was targeted.

Court documents show Abdulkader and the FBI source "traveled to a Walmart" and "discussed which knife would be best for the attack." They also did "recon on (the) police station."

While under FBI surveillance, they also "went to a private shooting range ... to learn about weapons and practice shooting."

Abdulkader then purchased an AK-47 in a Mason parking lot. The FBI arrested him.